Organometallic Synthesis from Inorganic and Organic Tin Halides

Organometallic Synthesis from Inorganic and Organic Tin Halides 

From 1914, the Grignard method of synthesis completely displaced the organozinc method and was widely used674. Up to 1960, fifty publications reporting the use of this method appeared125,675. 

It is noteworthy that in 1912 Smith and Kipping678 applied the Barbier synthesis, i.e. the addition of organic halide to a mixture of Mg and SnCU in ether (without preliminary preparation of the Grignard reagent) to obtain organylchlorostannanes in a good yield678,679. 

An interesting spirocyclic system was created by the reaction of SnCU with 1,2-bis(2/-lithiumphenyl)ethane by Kuivila and Beumel682 in 1958. Spirocyclic compounds were also obtained in the reaction of SnCU with 1,4-dilithium-1,2,3,4-tetraphenylbutadiene683,684 or with ethyl bis(2-lithiumphenyl)amine685. 

PhjSnNa and Ph2SnNa2. The reaction of the latter with Ph2SnBr2 in liquid ammonia gave the polymeric substance (Ph2Sn)n662. 

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C. Organometallic Synthesis from Inorganic and Organic Tin Halides... 

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